/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.commons.imaging.util;

import java.io.IOException;
import java.io.InputStream;

public class DebugInputStream extends InputStream {
    private final InputStream is;

    public DebugInputStream(InputStream is) {
        this.is = is;
    }

    private long bytes_read = 0;

    @Override
    public int read() throws IOException {
        int result = is.read();
        bytes_read++;
        return result;
    }

    @Override
    public long skip(long n) throws IOException {
        long result = is.skip(n);
        bytes_read += n;
        return result;
    }

    @Override
    public int available() throws IOException {
        return is.available();
    }

    @Override
    public void close() throws IOException {
        is.close();
    }

    public long getBytesRead() {
        return bytes_read;
    }
}
